the average speed of 10 drivers on the 405 freeway at 6 p.m. is 64 miles per hour what would the 11 drivers speed have to be to
bring the average of all 11 drivers to 65 miles per hour
1 answer:
B ) 75 Miles per hour
75 + 64(10) = 640 + 75 = 715
715 ÷ 11 ( how many drivers ) = 65
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